CN114499667B - Device and method for optimizing gain of bidirectional optical amplifier in single-fiber bidirectional optical fiber link - Google Patents
Device and method for optimizing gain of bidirectional optical amplifier in single-fiber bidirectional optical fiber link Download PDFInfo
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Abstract
An optimization device and an optimization method for the gain of a bidirectional optical amplifier in a single-fiber bidirectional optical fiber link. The device consists of a main end module and a far end module which are respectively connected to two ends of the optimized single-fiber bidirectional optical fiber link. The invention takes the sum of the inverse numbers of the signal-to-noise ratios of the signals received at the two ends of the single-fiber bidirectional optical fiber link as an objective function, and obtains the parameters of the single-fiber bidirectional optical fiber link through measurement under the preset condition, so that the efficiency of obtaining the optimal gain value of the bidirectional optical amplifier can be effectively improved.
Description
Technical Field
The invention relates to bidirectional transmission of optical fiber link signals, in particular to an optimization device and an optimization method for gain of a bidirectional optical amplifier in a single-fiber bidirectional optical fiber link.
Background
Optical fiber links equipped with bi-directional optical amplifiers are signal transmission channels commonly used for long-distance time-frequency transmission, optical fiber communication, and the like. The power of an optical signal is inevitably attenuated as it propagates in an optical fiber, and thus the attenuated optical signal is amplified using a bidirectional optical amplifier. However, during the propagation of the optical signal in the optical fiber link, various noises are inevitably generated, mainly secondary rayleigh scattering noise and spontaneous emission noise of the bidirectional optical amplifier, and the two noises deteriorate the signal-to-noise ratio of the received signal, so that the signal transmission is inaccurate. To reduce the effects of both types of noise, a mathematical model describing the device was developed by the learner (see [1]Sliwczynski,Kolodziej J.Bidirectional Optical Amplification in Long-Distance Two-Way Fiber-Optic Time and Frequency Transfer Systems [ J ]. IEEE Transactions on Instrumentation & Measurement,2013,62 (1): 253-262.), based on which the signal-to-noise ratio of the Fiber link for a given bi-directional optical amplifier gain could be calculated, but as the number of bi-directional optical amplifiers increases (e.g., by more than 5), the complexity and computation time for solving the optimal gain calculation for each bi-directional optical amplifier increased dramatically.
Disclosure of Invention
The invention aims to provide an optimization device and an optimization method for the gain of a bidirectional optical amplifier in a single-fiber bidirectional optical fiber link aiming at the defects of the prior art. The device and the method avoid the separate section-by-section measurement of the scattering and attenuation coefficients related to the optical fiber link, and can quickly solve the optimal gain of each bidirectional optical amplifier especially under the condition of more bidirectional optical amplifiers.
The technical scheme of the invention is as follows:
the bidirectional optical amplifier gain optimization device of the single-fiber bidirectional optical fiber link is characterized by comprising a main end module, a far end module and a single-fiber bidirectional optical fiber link to be optimized, wherein the main end module and the far end module are respectively connected with two ends of the single-fiber bidirectional optical fiber link to be optimized, the connecting end of the main end module is marked as a main end, the connecting end of the far end module is marked as a far end, the single-fiber bidirectional optical fiber link to be optimized is formed by connecting a 1 st optical fiber section to an n+1st optical fiber section with the 1 st bidirectional optical amplifier to the N bidirectional optical amplifier in sequence from the main end to the far end, and the parameters to be optimized are the gains of the 1 st bidirectional optical amplifier to the N bidirectional optical amplifier;
the main end module consists of a first light emitting unit, a first light receiving unit, a first signal-to-noise ratio analysis unit, a main processing control unit and a first light splitting unit, wherein the first light emitting unit is connected with a 1 port of the first light splitting unit, a 2 port of the first light splitting unit is connected with a main end of a single-fiber bidirectional optical fiber link to be optimized, a 3 port of the first light splitting unit is connected with a signal input port of the first light receiving unit, a signal output port of the first light receiving unit is connected with a signal input port of the first signal-to-noise ratio analysis unit, and an output port of the first signal-to-noise ratio analysis unit is connected with a control end of the main processing control unit;
the remote module consists of a second light emitting unit, a second light splitting unit, a second light receiving unit and a second signal-to-noise ratio analysis unit, wherein the output end of the second light emitting unit is connected with the 1 port of the second light splitting unit, the 2 port of the second light splitting unit is connected with the far end of the single-fiber bidirectional optical fiber link to be optimized, the 3 port of the second light splitting unit is connected with the signal input port of the second light receiving unit, the signal output port of the second light receiving unit is connected with the input end of the second signal-to-noise ratio analysis unit, and the output end of the second signal-to-noise ratio analysis unit is connected with the main processing control unit in the main end module for data processing.
The optimization method of the bidirectional optical amplifier gain device of the single-fiber bidirectional optical fiber link optimizes the objective function of the bidirectional optical amplifier gain in the single-fiber bidirectional optical fiber link as follows:
wherein ,SNRl and SNRr The signal to noise ratio of the received signals of the main end module and the far end module are respectively obtained by minimizing g, and the optimal gain value of each bidirectional optical amplifier in the single-fiber bidirectional optical fiber link to be optimized is obtained by the following specific steps:
1) Respectively connecting the main end module and the far end module to two ends of a single-fiber bidirectional optical fiber link to be optimized;
2) Presetting a gain matrix [ G ] of a bidirectional optical amplifier i,j ](i=1, …, M; j=1, …, N), where N is the number of bi-directional optical amplifiers in the single fiber bi-directional optical fiber link to be optimized,
G i,j representing a preset value of the jth bidirectional optical amplifier in the ith group of gain combinations;
3) According to a preset gain matrix [ G ] i,j ]The gain value G of each bidirectional optical amplifier in the single-fiber bidirectional optical fiber link to be optimized is configured in each row i,j (in the ith configuration, the gain value of the jth bidirectional optical amplifier is set to G i,j Wherein, the serial numbers of the bidirectional optical amplifiers from the main end to the far end in the single-fiber bidirectional optical fiber link to be optimized are 1,2, … and N respectively), the signal-to-noise ratios of the main end and the far end are measured, and the corresponding g is calculated and stored i (i＝1,…,M)；
4) According to the gain values of the groups of bidirectional optical amplifiers set in step 2) and the function g measured in step 3) i Is used to construct a system of linear equations as follows:
wherein ,
solving equation (2) to obtain h i ；
5) Based on the coefficient h obtained in step 4) i Calculating the scattering and attenuation coefficients related to the optical fiber link:
c m,n ＝h i and (2) and
wherein m=1, … N, n=m+1, …, n+1; />
d k ＝h i And (2) and
e k ＝h i and (2) and
6) The gain optimization objective function of the bidirectional optical amplifier in the single-fiber bidirectional optical fiber link is constructed as follows:
solving the gain value of each bidirectional optical amplifier when g is minimized in (4)
And the optimal gain value of each bidirectional optical amplifier in the single-fiber bidirectional optical fiber link to be optimized is used.
The invention has the technical effects that:
experiments show that the invention firstly avoids the independent section-by-section measurement of the scattering and attenuation coefficients related to the optical fiber link, and the time for solving the optimal gain value of each bidirectional optical amplifier in the single-fiber bidirectional optical fiber link is shorter even if the number of the bidirectional optical amplifiers is more.
Drawings
FIG. 1 is a schematic diagram of a gain apparatus for a bi-directional optical amplifier in an optimized single fiber bi-directional optical fiber link according to the present invention;
fig. 2 is a schematic diagram of an embodiment of the invention for optimizing the gain of a bi-directional optical amplifier in a single fiber bi-directional optical fiber link.
Fig. 3 is a graph showing the comparison of the calculated time length of solving the optimal gain value of each bidirectional optical amplifier in the single-fiber bidirectional optical fiber link and the calculated time length of solving by the traditional traversal method when the number of the bidirectional optical amplifiers is different.
Detailed Description
The present invention is further described below with reference to examples and drawings, the present examples are provided on the premise of the technical solution of the present invention, and detailed embodiments and specific working procedures are given, but the scope of protection of the present invention is not limited to the following examples.
Fig. 1 is a schematic structural diagram of a bidirectional optical amplifier gain device in an optimized single-fiber bidirectional optical fiber link according to the present invention, and fig. 2 is a schematic diagram of an embodiment of the optimized gain device in a single-fiber bidirectional optical fiber link according to the present invention. As can be seen from fig. 1, the device for optimizing the gain of a bidirectional optical amplifier in a single-fiber bidirectional optical fiber link according to the present invention comprises a main end module 1 and a far end module 2. As can be seen from fig. 2, in use, the main end module 1 and the remote end module 2 of the device for optimizing the gain of a bi-directional optical amplifier in a single-fiber bi-directional optical fiber link of the present invention are connected to the main end and the remote end, respectively, of the single-fiber bi-directional optical fiber link to be optimized. Furthermore, as can be seen from fig. 2, the single-fiber bidirectional optical fiber link to be optimized is formed by connecting optical fiber segments of 1 to n+1 from the main end to the far end and bidirectional optical amplifiers of 1 to N, respectively.
The main end module 1 is composed of a first light emitting unit 3, a first light receiving unit 4, a first signal-to-noise ratio analysis unit 5, a main processing control unit 6 and a first light splitting unit 7. The first optical transmitting unit 3 is connected with the 1 port of the first optical splitting unit 7, the 2 port of the first optical splitting unit 7 is connected with the main end of the single-fiber bidirectional optical fiber link to be optimized, the 3 port of the first optical splitting unit 7 is connected with the signal input port of the first optical receiving unit 4, the signal output port of the first optical receiving unit 4 is connected with the signal input port of the first signal-to-noise ratio analyzing unit 5, and the output signal of the first signal-to-noise ratio analyzing unit 5 is connected to the main processing control unit 6.
The remote module 2 is composed of a second light emitting unit 8, a second light splitting unit 9, a second light receiving unit 10 and a second signal-to-noise ratio analysis unit 11. The second optical transmitting unit 8 is connected with the 1 port of the second optical splitting unit 9, the 2 port of the second optical splitting unit 9 is connected with the far end of the single-fiber bidirectional optical fiber link to be optimized, the 2 port of the second optical splitting unit 9 is connected with the signal input port of the second optical receiving unit 10, and the signal output port of the second optical receiving unit 10 is connected with the second signal-to-noise ratio analyzing unit 11. The remote snr analysis result output by the second snr analysis unit 11 is sent to the main processing control unit 6 in the main terminal module 1 for data processing.
The invention also provides a method for optimizing the gain of the bidirectional optical amplifier in the single-fiber bidirectional optical fiber link, which is characterized in that the method optimizes the objective function of the gain of the bidirectional optical amplifier in the single-fiber bidirectional optical fiber link as follows:
wherein ,SNRl and SNRr The signal to noise ratio of the received signals at the main end and the remote end respectively. Obtaining the optimal gain value of each bidirectional optical amplifier in the single-fiber bidirectional optical fiber link to be optimized by minimizing g;
the optimization method of the device for optimizing the gain of the bidirectional optical amplifier in the single-fiber bidirectional optical fiber link comprises the following specific steps:
1) The main end module 1 and the far end module 2 are respectively connected to the main end and the far end of a single-fiber bidirectional optical fiber link to be optimized;
2) Presetting a gain matrix [ G ] of a bidirectional optical amplifier i,j ](i=1, …, M; j=1, …, N), where N is the number of bi-directional optical amplifiers in the single fiber bi-directional optical fiber link to be optimized,
G i,j representing a preset value of the jth bidirectional optical amplifier in the ith group of gain combinations;
3) According to a preset gain matrix [ G ] i,j ]Setting the gain value of each bidirectional optical amplifier in the single-fiber bidirectional optical fiber link to be optimized (at the ith setting, the gain value of the jth bidirectional optical amplifier is set to G i,j Wherein, the serial numbers of the bidirectional optical amplifiers from the main end to the far end in the single-fiber bidirectional optical fiber link to be optimized are respectively 1,2, … and N, the signal-to-noise ratio measuring equipment is used for measuring the signal-to-noise ratio of the main end and the far end, and the corresponding g is calculated and stored according to the formula (1) i (i＝1,…,M)；
4) According to the gain values of the two-way optical amplifiers of each group set in the step 2) and the function g measured in the step (3) i Is used to construct a system of linear equations as follows:
wherein ,
solving equation (2) to obtain h i 。
5) Based on the coefficient h obtained in step 4) i Calculating the scattering and attenuation coefficients related to the optical fiber link:
c m,n ＝h i and (2) and
d k ＝h i and (2) and
e k ＝h i and (2) and
6) The gain optimization objective function of the bidirectional optical amplifier in the single-fiber bidirectional optical fiber link is constructed as follows:
solving the gain value of each bidirectional optical amplifier when g is minimized in (4)
And the optimal gain value of each bidirectional optical amplifier in the single-fiber bidirectional optical fiber link to be optimized is used.
The traditional method for solving the optimal gain value of each bidirectional optical amplifier in the single-fiber bidirectional optical fiber link is to traverse the gain value of each bidirectional optical amplifier and calculate the signal-to-noise ratio of the received signals of the main end module and the far end module, and record the gain value of each bidirectional optical amplifier as the optimal gain when the signal-to-noise ratio of the received signals of the main end module and the far end module reaches the maximum. When the number of the bidirectional optical amplifiers in the single-fiber bidirectional optical fiber link is large, the calculation time of the traditional solving method increases exponentially along with the number of the bidirectional optical amplifiers, and the traversal process takes a long time. In addition, in practical applications, conventional amplification requires separate, segment-by-segment measurement of the scattering and attenuation coefficients associated with the optical fiber link, but when the number of bi-directional optical amplifiers is large, the measurement process is cumbersome and complex.
The method provided by the invention firstly avoids the independent section-by-section measurement of the scattering and attenuation coefficients related to the optical fiber link, and the time for solving the optimal gain value of each bidirectional optical amplifier in the single-fiber bidirectional optical fiber link is shorter even if the number of the bidirectional optical amplifiers is more.
Fig. 3 shows the calculated time length for solving the optimal gain value of each bidirectional optical amplifier in the single-fiber bidirectional optical fiber link and the calculated time length for solving by the traditional traversal method when the number of the bidirectional optical amplifiers is different, and as can be seen from the figure, when the number of the bidirectional optical amplifiers exceeds 5, the calculated time length for solving by the traditional traversal method is increased exponentially. The calculation time length of the solving method provided by the invention is less in increase.
Claims (2)
1. The optimization method for the gain of the bidirectional optical amplifier in the single-fiber bidirectional optical fiber link is characterized by comprising the following steps of:
wherein ,SNRl and SNRr The signal to noise ratio of the received signals of the main end module (1) and the far end module (2) is respectively obtained by minimizing g, and the optimal gain value of each bidirectional optical amplifier in the single-fiber bidirectional optical fiber link to be optimized is obtained by the following specific steps:
1) Connecting the main end module (1) and the far end module (2) to two ends of a single-fiber bidirectional optical fiber link to be optimized respectively;
2) Presetting a gain matrix [ G ] of a bidirectional optical amplifier i,j ](i＝1,…,M；j＝1,…,N)，
Where N is the number of bi-directional optical amplifiers in the single fiber bi-directional optical fiber link to be optimized,
G i,j representing a preset value of the jth bidirectional optical amplifier in the ith group of gain combinations;
3) According to a preset gain matrix [ G ] i,j ]The gain value G of each bidirectional optical amplifier in the single-fiber bidirectional optical fiber link to be optimized is configured in each row i,j (in the ith configuration, the gain value of the jth bidirectional optical amplifier is set to G i,j Wherein, the serial numbers of the bidirectional optical amplifiers from the main end to the far end in the single-fiber bidirectional optical fiber link to be optimized are 1,2, … and N respectively), the signal-to-noise ratios of the main end and the far end are measured, and the corresponding g is calculated and stored i (i＝1,…,M)；
4) According to the gain values of the groups of bidirectional optical amplifiers set in step 2) and the function g measured in step 3) i Is used to construct a system of linear equations as follows:
wherein ,
solving equation (2) to obtain h i ；
5) Based on the coefficient h obtained in step 4) i Calculating the scattering and attenuation coefficients related to the optical fiber link:
c m，n ＝h i and (2) and
wherein m=1, … N, n=m+1, …, n+1;
d k ＝h i and (2) and
e k ＝h i and (2) and
6) The gain optimization objective function of the bidirectional optical amplifier in the single-fiber bidirectional optical fiber link is constructed as follows:
solving the gain value of each bidirectional optical amplifier when g is minimized in (4)
And the optimal gain value of each bidirectional optical amplifier in the single-fiber bidirectional optical fiber link to be optimized is used.
2. The device for implementing the optimization method of the gain of the bidirectional optical amplifier in the single-fiber bidirectional optical fiber link according to claim 1, wherein the device is composed of a main end module (1), a far end module (2) and a single-fiber bidirectional optical fiber link to be optimized, the main end module (1) and the far end module (2) are respectively connected with two ends of the single-fiber bidirectional optical fiber link to be optimized, the connecting end of the main end module (1) is denoted as a main end, the connecting end of the far end module (2) is denoted as a far end, the single-fiber bidirectional optical fiber link to be optimized is formed by connecting a 1 st optical fiber section to an n+1 st optical fiber section with the 1 st bidirectional optical amplifier to the nth bidirectional optical amplifier in sequence from the main end to the far end, and parameters to be optimized are the gains of the 1 st bidirectional optical amplifier to the nth bidirectional optical amplifier;
the main end module (1) consists of a first light emitting unit (3), a first light receiving unit (4), a first signal-to-noise ratio analysis unit (5), a main processing control unit (6) and a first light splitting unit (7), wherein the first light emitting unit (3) is connected with a 1 port of the first light splitting unit (7), a 2 port of the first light splitting unit (7) is connected with a main end of a single-fiber bidirectional optical fiber link to be optimized, a 3 port of the first light splitting unit (7) is connected with a signal input port of the first light receiving unit (4), a signal output port of the first light receiving unit (4) is connected with a signal input port of the first signal-to-noise ratio analysis unit (5), and an output port of the first signal-to-noise ratio analysis unit (5) is connected with a control end of the main processing control unit (6);
the remote module (2) is composed of a second light emitting unit (8), a second light splitting unit (9), a second light receiving unit (10) and a second signal-to-noise ratio analysis unit (11), wherein the output end of the second light emitting unit (8) is connected with the 1 port of the second light splitting unit (9), the 2 port of the second light splitting unit (9) is connected with the remote end of a single-fiber bidirectional optical fiber link to be optimized, the 3 port of the second light splitting unit (9) is connected with the signal input port of the second light receiving unit (10), the signal output port of the second light receiving unit (10) is connected with the input end of the second signal-to-noise ratio analysis unit (11), and the output end of the second signal-to-noise ratio analysis unit (11) is connected with the main processing control unit (6) in the main end module (1) for data processing.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014177224A1 (en) * | 2013-05-03 | 2014-11-06 | Huawei Technologies Co.,Ltd. | Method for assigning launch powers to an arrangement of physically coupled fiber spans |
| CN104243048A (en) * | 2014-08-28 | 2014-12-24 | 北京邮电大学 | Transmission performance optimization method and system based on simplicissimum in coherent light communication system |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004018166A1 (en) * | 2003-05-08 | 2004-12-16 | Siemens Ag | Pre-emphasis method for optical multiplex signal in optical transmission system has new signal values calculated from actual signal powers at transmitter and receiver and mean power at transmission side |
| CN1240166C (en) * | 2003-06-04 | 2006-02-01 | 清华大学 | All optical fibre adjustable width continuous spectrum laser pump source for superflat wide-band Raman amplification |
| CN102362439B (en) * | 2009-01-26 | 2015-06-10 | 德雷塞尔大学 | Systems and methods for selecting reconfigurable antennas in MIMO systems |
| CN101888286A (en) * | 2009-05-11 | 2010-11-17 | 京信通信***（中国）有限公司 | Decoding method of MIMO space multiplexing and device thereof |
| CN102931926B (en) * | 2011-08-08 | 2015-10-28 | 中国科学院微电子研究所 | Low-noise amplifier optimization method |
| US9419408B2 (en) * | 2013-12-27 | 2016-08-16 | Arris Enterprises, Inc. | Optical amplifier with self-adjusting gain based on reflected feedback |
| US10084541B2 (en) * | 2014-04-04 | 2018-09-25 | Nxgen Partners Ip, Llc | Shorter wavelength transmission of OAM beams in conventional single mode fiber |
| WO2015161473A1 (en) * | 2014-04-23 | 2015-10-29 | 华为技术有限公司 | Method and device for optimizing performance of optical communication network |
| CN104410452B (en) * | 2014-10-29 | 2019-03-12 | 国家电网公司 | A kind of long range coherent optical communication system transmission performance optimization method |
| US9780909B2 (en) * | 2014-12-29 | 2017-10-03 | Juniper Networks, Inc. | Network topology optimization with feasible optical paths |
| CN104734643B (en) * | 2015-01-16 | 2017-10-10 | 南京航空航天大学 | A kind of module Allocation method for realizing low-power consumption radio-frequency transmitter |
| CN105790845B (en) * | 2016-04-08 | 2017-12-26 | 上海交通大学 | Single fiber bi-directional time division multiplexing optical amplification device |
| CN106130851A (en) * | 2016-08-29 | 2016-11-16 | 中邮科通信技术股份有限公司 | A kind of LTE digital two-channel multimedium is registered one's residence covering system |
| CN106357336B (en) * | 2016-08-31 | 2018-12-25 | 上海交通大学 | High-precision long-distance distributed optical fiber time delivering method and system |
| US10218454B2 (en) * | 2017-03-13 | 2019-02-26 | Google Llc | Open, modular, and scalable optical line system |
| CN107579771B (en) * | 2017-09-26 | 2019-09-10 | 中国人民解放军国防信息学院 | A kind of Optic Fiber Transport Network intelligent alarm method based on single alarm forward trace |
| CN109120370B (en) * | 2018-07-27 | 2020-05-12 | 武汉光迅科技股份有限公司 | DWDM remote pumping system capable of improving OSNR |
| CN109660299B (en) * | 2019-01-10 | 2021-09-07 | 上海交通大学 | Bidirectional wavelength division multiplexing optical amplifier |
| CN110190879B (en) * | 2019-04-30 | 2020-08-11 | 杭州电子科技大学 | Energy efficiency optimization method based on low-precision ADC large-scale MIMO system |
-
2022
- 2022-01-28 CN CN202210105462.4A patent/CN114499667B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014177224A1 (en) * | 2013-05-03 | 2014-11-06 | Huawei Technologies Co.,Ltd. | Method for assigning launch powers to an arrangement of physically coupled fiber spans |
| CN104243048A (en) * | 2014-08-28 | 2014-12-24 | 北京邮电大学 | Transmission performance optimization method and system based on simplicissimum in coherent light communication system |
Non-Patent Citations (1)
| Title |
|---|
| 一种PTN网络中IEEE 1588v2非对称时延的解决方案;彭良福;李有生;黄勤珍;;光通信技术(第07期);全文 * |
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